diff --git a/src/station.cpp b/src/station.cpp
--- a/src/station.cpp
+++ b/src/station.cpp
@@ -153,7 +153,7 @@ void Station::AddFacility(StationFacilit
 
 void Station::MarkDirty() const
 {
-	if (this->sign.width_1 != 0) {
+	if (this->sign.width_normal != 0) {
 		InvalidateWindowWidget(WC_STATION_VIEW, index, SVW_CAPTION);
 		this->sign.MarkDirty();
 	}